Datafiles



  • TV_watching Download .TXT file Open in Data Desk ?
  • Methods: Analysis of Variance, Multifactor Analysis of Variance
  • Source: unknown
  • Number of Cases: 197
  • Excerpt: A study at a liberal arts college attempted to find out whether men and women watch the same amount of TV, on average and whether it mattered if students were varsity athletes or not. Student researchers asked 200 randomly selected students questions about their backgrounds and about their television-viewing habits and received 197 legitimate responses. […]




  • Twins_by_year_2014 Download .TXT file Open in Data Desk ?
  • Methods:
  • Source: www.cdc.gov/nchs/births.htm
  • Number of Cases: 35
  • Excerpt: In January 2012, the New York Times published a story called “Twin Births in the U.S., Like Never Before,” in which they reported a 76 percent increase in the rate of twin births from 1980 to 2009. The dataset gives the number of twin births each year (per 1000 live births). Can you confirm the […]


  • Twins_by_year_2018 Download .TXT file Open in Data Desk ?
  • Methods: Correlation, Inference, Re-expression, Regression
  • Source: www.cdc.gov/nchs/births.htm
  • Number of Cases: 39
  • Excerpt: In January 2012, the New York Times published a story called “Twin Births in the U.S., Like Never Before,” in which they reported a 76 percent increase in the rate of twin births from 1980 to 2009. The dataset gives the number of twin births each year (per 1000 live births). Can you confirm the […]








  • Used_cars_2014 Download .TXT file Open in Data Desk ?
  • Methods: R-squared, Regression, Residuals
  • Source: Carmax.com search for Toyota Corollas for sale within 250 radius of Redlands, CA in 2014
  • Number of Cases: 13
  • Excerpt: How does the age of a used car influence its price? This is a small enough data set to find a model with a calculator.


  • Used_Civics_2017 Download .TXT file Open in Data Desk ?
  • Methods: Correlation, Regression, Scatterplot
  • Source: www.autotrader.comaccessed on 22 Jan 2017 with a search for Honda Civics for sale by owner.
  • Number of Cases: 55
  • Excerpt: The web site www.autotrader.com lists cars for sale. On January 22 2017, it listed 55 used Honda Civics for sale by owner. From those listings, we extracted the asking price ($), the mileage, and the model year (from which we computed the age of the car at the time the data were collected Questions include […]


  • Used_CIvics_2020 Download .TXT file Open in Data Desk ?
  • Methods: Multiple Regression Inference, Regression Inference
  • Source: www.autotrader.com accessed on 22 Jan 2017 with a search for Honda Civics for sale by owner.
  • Number of Cases: 55
  • Excerpt: The web site www.autotrader.com lists cars for sale. On January 22 2017, it listed 55 used Honda Civics for sale by owner. From those listings, we extracted the asking price ($), the mileage, and the model year (from which we computed the age of the car at the time the data were collected Questions include […]